Green’s Dictionary of Slang

1. an upwardly mobile, pretentious or snobbish black person.

1980

E. Folb Runnin’ Down Some Lines 234: diddybopper 1. One who is pretentious or pompous (often refers to upwardly mobile black person who identifies with white mainstream culture). 2. Black person who lives in a middle-class neighborhood.

2. see bebopper n. (4) .